DE876715C - Circuit arrangement for the determination of charges in telephone systems with time zone numbering - Google Patents

Description

Circuit arrangement for calculating charges in telephone systems with time zone counting The invention relates to a circuit arrangement for telephone systems with network group traffic and time zone counting. In telephone systems with dialer operation and semi-automatic switching as well as those with automatic connection establishment it is known to use devices for billing by slip printers, which, after the end of the call, sends a notification of the fee due to the calling party Enable participants.

In telephone systems with time zone counting, in which at the end of the During the conversation or during the connection, the fee due due to metering current surges is transmitted to the subscriber counter, is its transmission to the calling party Participants only possible if there are special facilities in the participant connection are provided. Such devices are known as fee displays and require both in the exchange and at the subscriber an additional expense, so that their use for all subscriber lines is uneconomical. In general fee displays are only attached at the special request of the participants and additional fees are charged for this.

There are also circuit arrangements for acoustic charge display known to the calling subscriber for whom the request to display the charges takes place by hanging up and unhooking the handset. These known arrangements have however, the disadvantage that they are not readily available for extension systems can be used. there is a triggering when the charge display is requested the occupied connection device can take place. However, it is also used in the known Orders also, if no charge announcement is required, the busy connection facility kept occupied for a certain time, and this unnecessary occupancy of the connection device can only be prevented by a special switching measure.

Also is in a known arrangement in the provision for Charge announcement of the subsequent installation of switching means in the existing first Group voter from a local office required.

The invention avoids the disadvantages of the known arrangements and the installation of special switching means in the existing first group selector of the local office in that the time zone counter switching means are assigned which by a from the calling subscriber in the rhythm of ordinary dialing surges, z. B. with the Rotary dial, given signal trigger the acoustic charge display.

According to further features of the invention, it is only necessary that the charge display. Serving facilities (time zone counter) a resettable counter is attached, on which the fee that has become due can be read, as well as facilities that enable the calling subscriber to identify the request for the fee announcement on the device in question. The facilities required for meter reading and announcements are grouped together for all time zone counters at one point in the office, v an announcement station, in order to enable easy operation. The request to announce the charges is given by the calling subscriber by pressing the dial or by dialing the number o: The drawing shows, omitting the for the er-. The facilities required for requesting and announcing charges as an addition to a time zone counter can be found inessentials. The devices used to determine time and zones as well as to transmit the counting current surges are not shown in detail, since they are of no importance for the explanation of the processes. Only the contacts used to control these devices are indicated. The function of the device is as follows: The assignment takes place via the line c, whereby the relay C responds and prepares various circuits with its contacts. The dialing current surges sent by the calling subscriber influence the relay A, which passes the current surges on with its contact ai and transmits it to the charge recording device ZZZ with a 2.

If the called subscriber answers, relay M is energized via line b , which switches on relay G with contact mi and passes the hang-up criterion to device ZZZ with contact »a2 in order to switch on the devices used to record the call time. The relay G closes a holding circuit for itself with its contact gi and prepares the circuits of the relays 1i 'and H with contact g2.

If the calling subscriber hangs up without requesting the charge announcement, the hang-up pulse energizes relay A for about 250 ms and, with its contact ai, interrupts the circuit of relay G, which drops out after about 150 ms and contacts contact gi finally switches off. The device ZZZ is caused by the contact 9 3 to transmit the counting current surges due to the subscriber counter, which is done by the contact z via the contacts k i, si and the line b . After the end of the metering surge transmission, the. Tripping by de-energizing the line c.

However, if the subscriber wants the announcement of the fee that has become due, he sends a series of pulses "through which relay A is energized, with relay G remaining energized due to its drop-out delay. Via contacts g2 and a3, the first time relay A responds, Relay 1% energized and when relay A drops out, relay H is energized via contacts a3 and v2, which is maintained via contacts ci, s2 and h2 and switches off relay G with contact h3. Through contact 93 the device ZZZ causes for dispensing the Zählstromstöße. by the contact hi the Zählstromstoßsendung lashing subscriber meter is interrupted and switched to a reverse counter, which is housed in the announcement place the same time the lamp AL is lit, so that the operator of the announcement place the fee request by the contact 74. can recognize: By pressing the button AT, the relay S is energized via contact 724, which with its contacts si and s3 den The operator's intercom switches through to the calling subscriber, interrupts the holding circuit of relay H with contact s 2, bridges contact ki with contact s4 and closes a holding circuit with contact s5.

The operator of the announcement position now informs the calling subscriber the amount of the fee that can be read on the return counter. The calling party hangs on, relay A is excited by the hang-up pulse and interrupts with contact 94 the holding circuit of the relay S, which drops out, with the contacts s i and s3 den The intercom turns off and at the same time a circuit for the passing on of the Counting to the participant counter prepared.

Contact r of the return counter is now activated via contact s5 a breaker is switched, which means that the counter is reset by so many steps is how it has received counting current surges, after which it is switched off by the contact ze will. During the return, the contact r provides a corresponding number Current surges transmitted via contact s i and line b to the subscriber counter, whereupon then the connection is released in the usual way.

If an additional fee is charged for the announcement, then for example by the indicated button ZT the counter by exciting his Magnets E can be further controlled by a corresponding number of steps, so that at the delivery a corresponding number of metering surges more than has been recorded.

The selected representation shows the facilities for a telephone system, in which the counting current impulses are transmitted to the subscriber counter at the end of the conversation will. For telephone systems with counting during the call is simplified the arrangement in that the return counter simultaneously with the transmitted Counting current surges can be set and a subsequent transmission of the same on the participant counter is not required. Additional counting surges that be due for the announcement of the charge, can be directly through the counting key ZT are passed on to the subscriber counter, expediently in order to avoid reading errors to avoid, at the same time the return counter is connected upstream accordingly. This The process can also be carried out automatically when queried, as can this is possible without difficulty with the selected representation.

The invention can be further developed in that on Place the charge announcement by an operator an automatic device is set, the fee due to the participant phonographically approves. Here, instead of the return counter, switching devices such. B. Voters, set, which are advanced by the counting current surges and one corresponding tap on a common phonographic device with the Connect subscriber line.

Claims (7)

PATENT CLAIMS: i. Circuit arrangement for acoustic charge display at the calling subscriber for telephone systems with network group traffic and time zone counting, characterized in that switching means are assigned to the time zone counter which by one of the calling subscriber in the rhythm of ordinary dialing current surges, z. B. trigger the acoustic charge display with the @, # 'dial, given signal. 2. Circuit arrangement according to claim i, characterized in that the time zone counter Facilities are assigned which the request for the charge announcement by the Identify the calling party. 3. Circuit arrangement according to claim i and z, characterized in that in telephone systems with counting at the end of the connection when the charge announcement is requested, the counting current impulses stored in the time zone counter Transferred to a counter, stored in it and after the charge announcement has been made can be passed on to the participant counter. q .. Circuit arrangement according to claim i and 2, characterized in that in telephone systems with counting during the Conversation the counting current surges at the same time to the subscriber counter and to a Transfer of the meter enabling the fee to be read in the exchange will. Circuit arrangement according to Claims 3 and q., Characterized in that the meter enabling the reading automatically after the charge announcement has been made is postponed. 6. Circuit arrangement according to claim i to 5, characterized in that an additional fee which becomes due for the fee announcement either by a special switching measure of the operator (pressing the button 7. T) or automatically when the same occurs for the purpose of the fee announcement. is transferred to the reading counter and, depending on the type of counting, also to the subscriber counter. 7. Circuit arrangement according to claim i to 6, characterized in that the devices for announcing charges for several or all time zone counters of the exchange are combined in a common announcement place. B. Circuit arrangement according to Claims i to 7, characterized in that the charge announcement is made by a common phonographic device which is brought into connection with the subscriber line by switching devices set by the counting currents. Cited publications: German Patent No. 696 237; Swiss patent specification No. 2o3 27i.